This API supports the product infrastructure and is not intended to be used directly from your code.
Returns the source for the top-most element on the event route stack at which two logical trees diverge.

This class corresponds to a valid RoutedEvent, and contains an ordered list of target object and handler list pairs that refer to the event route for that event. EventRoute supports adding new entries to the list and also allows for the handlers in the list to be invoked.

Most normal operations for adding handlers for Windows Presentation Foundation (WPF) events do not require working with this class (for instance, use EventManager methods to add class handling, or query for existing handlers of an event). This class is mainly for use when elements have particular knowledge about child elements or parent elements that make it practical to either add elements to or remove elements from the default calculated event route.